JPH0218118A - Speed change gear for tractor - Google Patents
Speed change gear for tractorInfo
- Publication number
- JPH0218118A JPH0218118A JP16717488A JP16717488A JPH0218118A JP H0218118 A JPH0218118 A JP H0218118A JP 16717488 A JP16717488 A JP 16717488A JP 16717488 A JP16717488 A JP 16717488A JP H0218118 A JPH0218118 A JP H0218118A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- gear
- speed change
- transmission
- change gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 230000001133 acceleration Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、トラクタの変速装置に関し、トラクタ作業
において、旋回操向時に前車輪を高速の変速位置に伝動
させて、旋回を容易に行わしめようとするものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a transmission for a tractor, and is intended to facilitate turning by transmitting the front wheels to a high-speed shifting position during turning steering during tractor work. It is something to do.
従来の技術、および発明が解決しようとする課題
トラクタは、作業走行中は比較的低速度で、路上走行中
は高速度で走行する。このため、旋回操向時に、前車輪
を通常時のはゾニ倍に増速しで変速伝動して、旋回を容
易に行う形態にあっては、路上走行時この増速変速が行
われることになると、高速走行中に急旋回が行われるこ
ととなり、転倒し易く、又操縦者が座席から振落され易
くなる等、危険である。Background Art and Problems to be Solved by the Invention Tractors travel at relatively low speeds while working and at high speeds while traveling on the road. For this reason, when turning and steering, if the front wheels are geared up to twice the normal speed to facilitate turning, this increased speed change will be performed when driving on the road. If this happens, the vehicle will make a sharp turn while traveling at high speed, which is dangerous as it will easily fall over and the operator will be easily thrown off the seat.
課題を解決するための手段
この発明は、前車輪(1)と後車輪(2)とを駆動する
四輪駆動の変速伝動装M(3)において、副変速装置(
4)の低速位置で該前車輪(1)を増変速する増速伝動
装置(5)を設けてなるトラクタの変速装置の構成とす
る。Means for Solving the Problems The present invention provides a four-wheel drive transmission M (3) that drives front wheels (1) and rear wheels (2).
4) A tractor transmission device is provided with a speed increasing transmission device (5) that increases the speed of the front wheel (1) at the low speed position.
発明の作用、および効果
トラクタ走行時の変速は、通常変速伝動装置(3)の主
変速装置によって変速操作されて、後車輪(2)及び前
車輪(1)が伝動回転される。副変速装置(4)は、高
速域(H)と低速域(L)とがあって、路上走行時のよ
うに比較的高速で走行するときは高速位置(H)に副変
速し、作業を行うときは低速域(L)に副変速する。Functions and Effects of the Invention When the tractor is running, the gears are normally changed by the main transmission of the transmission (3), and the rear wheels (2) and front wheels (1) are rotated. The sub-transmission device (4) has a high-speed range (H) and a low-speed range (L), and when driving at relatively high speeds such as when driving on the road, the sub-transmission device (4) shifts to the high-speed position (H) and performs work. When doing so, sub-shift to the low speed range (L).
作業走行中に旋回操向すると、例えばステアリングハン
ドルの一定以上の操向角によって、増速伝動装置(5)
が変速伝動されて、前車輪(1)が高速に変速回転され
、このため旋回が円滑に行われる。When turning and steering during work driving, for example, by turning the steering wheel over a certain angle, the speed-increasing transmission device (5)
is transmitted at variable speeds, and the front wheels (1) are rotated at high speed at variable speeds, thereby making turning smooth.
このような増速伝動装@(5)による高速伝動は。High-speed transmission using such a speed-increasing transmission device @(5) is as follows.
副変速装置(4)が高速域(H)にあるときは行われず
、低速域(L)にあるときにのみ行われる。しかも前車
輪(1)の増変速は、四輪駆動の変速伝動装置(3)に
おいて増速伝動装置(5)を設けて行わせるものである
から、構成がN潔であり、的確な増速牽制を維持して、
安全性を高めることができる。It is not performed when the sub-transmission device (4) is in the high speed range (H), and is performed only when it is in the low speed range (L). Moreover, since the speed increase of the front wheels (1) is performed by installing the speed increase transmission device (5) in the four-wheel drive speed change transmission device (3), the configuration is N-clean and the speed increase can be performed accurately. maintain control,
Safety can be increased.
実施例
なお、回倒において、トラクタ車体部の伝動ケース(6
)内の変速伝動装置(3)には、エンジン(7)から入
力される入力軸(8)と、後車輪(2)の後輪軸へ伝動
する出力軸(9)との間に、主変速装置を構成する主変
速ギヤ(Iω(10を設けると共に、副変速装[+4)
を構成する副変速ギヤ(17J(11を設け、この副変
速ギヤ0?Jを噛合伝動すると出力軸(9)を高速伝動
し、副変速ギヤ(131を噛合伝動すると出力軸(9)
を低速伝動して、路上走行速と作業走行速とに切換える
。04は操縦席(19前のステアリングハンドル(IB
上下方設けた該主変速ギヤ(1ω(111を変速操作す
る主変速レバー、(i力は副変速ギヤ0♂(+3)を変
速操作する副変速レバーである。(11は変速ギヤ(1
υ(11)等を設ける主変速軸である。In the embodiment, when the tractor body is rotated, the transmission case (6
) is connected to the main speed change transmission device (3) between an input shaft (8) that receives input from the engine (7) and an output shaft (9) that transmits power to the rear axle of the rear wheels (2). In addition to the main transmission gear (Iω (10) that constitutes the device, the auxiliary transmission [+4]
A sub-transmission gear (17J (11) is provided, which constitutes the sub-transmission gear (17J), and when the sub-transmission gear 0?
is transmitted at low speed and switched between road speed and work speed. 04 is the cockpit (19 front steering wheel (IB)
The main transmission gear (1ω (111) provided above and below is the main transmission lever for shifting the gear, (i force is the auxiliary transmission lever for shifting the auxiliary transmission gear 0♂ (+3). (11 is the transmission gear (1)
This is the main transmission shaft where υ(11) etc. are provided.
出力軸(9)の下側に平行状に前輪伝動軸(1’flと
、倍速軸回とを設け、この前輪伝動軸(19上には、該
副変速ギヤ(121(+31の切換によって噛合回転さ
れる高速ギヤ2+1を一体回転するように、又低速ギヤ
(23を回転自在に設け、更にこの低速ギヤQ3には、
この前輪伝動軸+Inと一体回転のクラッチ(2)が入
り切りするように設けられ、副変速による前輪伝動軸(
1!IIの低速伝動回転は、このクラッチ(2)の入り
によって行われる。A front wheel transmission shaft (1'fl) and a double speed shaft are provided parallel to the lower side of the output shaft (9). A low speed gear (23) is rotatably provided so that the high speed gear 2+1 rotates integrally with the rotated high speed gear 2+1, and furthermore, this low speed gear Q3 has a
A clutch (2) that rotates integrally with this front wheel transmission shaft +In is provided so that it can be turned on and off, and the front wheel transmission shaft (
1! The low-speed transmission rotation of II is performed by engaging this clutch (2).
該倍速軸c!G上には、該低速ギヤ(23と常時噛合す
るギヤ(ハ)と、該高速ギヤf2++と常時噛合するギ
ヤ12つと、これら両ギヤ間を摩擦伝動するディスクク
ラッチr2eとを設け、このディスククラッチ12eを
油圧によるピストン(5)によって入り切りすることに
より、この低速ギヤQ3からギヤQ4、このクラッチQ
e、ギヤ四、及び高速ギヤ?1)等を経て、前輪伝動軸
(19を、クラッチのによる低速ギヤ(2δから直接前
輪伝動軸(1つへの伝動比に対して、ぼり二倍の増速比
でッチ128と(2)との間は、シフター(2Iで連結
されて、ディスククラッチ(2eを入りにしたとき、ク
ラッチ(2)は切りとなり、又ディスククラッチ(至)
を切りにしたときクラッチ(至)は入りどなる関係に連
動構成している。The double speed axis c! G is provided with a gear (c) that is always in mesh with the low speed gear (23), 12 gears that are always in mesh with the high speed gear f2++, and a disc clutch r2e that transmits friction between these two gears. 12e is turned on and off by a hydraulic piston (5), from this low speed gear Q3 to gear Q4 and this clutch Q.
e, gear 4 and high speed gear? 1) etc., the front wheel transmission shaft (19) is connected directly to the front wheel transmission shaft (19) by the clutch, and then the low speed gear (2δ) is directly connected to the front wheel transmission shaft (128 and (2 ), the shifter (2I) is connected, and when the disc clutch (2e) is engaged, the clutch (2) is disengaged, and the disc clutch (2) is connected.
When the clutch is turned off, the clutch is engaged and engaged.
I2旧士前輸出力軸であり、該前輪伝動軸(!9の前端
との間をクラッチOIで咬合でき、このクラッチ01に
よって四輪駆動走行としたり、後輪駆動走行とすること
ができる。又、この出力軸C9から前車輪(1ンの前車
輪へ伝動軸Oυで連結している。I2 is the old front export power shaft, and the front end of the front wheel transmission shaft (!9) can be engaged with the clutch OI, and this clutch 01 enables four-wheel drive or rear-wheel drive. Further, this output shaft C9 is connected to the front wheels (1) by a transmission shaft Oυ.
■は主変速軸OB外周に回転自在の外軸で、副変速ギヤ
(11の噛合されるギヤ(至)を有する。(ロ)は出力
軸(9)外周に回転自在の外軸で、副変速ギヤαδの噛
合されるギヤ(至)を有する。(2) is an outer shaft that can freely rotate around the outer periphery of the main transmission shaft OB, and has a sub-transmission gear (11 gears (to) to be meshed with it). (B) is an outer shaft that can freely rotate around the outer periphery of the output shaft (9), and It has a gear (to) that is meshed with the transmission gear αδ.
副変速ギヤ(1?J (13の操作によって、低速域(
L)では、クラッチ(至)の手動入り操作によって、前
輪伝動軸(至)が低速で伝動回転される。この低速域(
L)時にクラッチ(2eが操向操作等に連動して入り操
作されると、増速伝動装置(5)が伝動状態になって、
前輪伝動軸(1ツを増速回転伝動する。又、副変速ギヤ
(1のをギヤ(至)に噛合させると、高速ギヤG!+1
も噛合回転されて、前輪伝動軸(Iglは高速伝動され
る。By operating the sub-transmission gear (1?J (13), the low speed range (
In L), by manually engaging the clutch (to), the front wheel transmission shaft (to) is transmitted and rotated at a low speed. This low speed range (
When the clutch (2e) is engaged in conjunction with the steering operation etc. at the time of L), the speed increasing transmission device (5) becomes the transmission state,
The front wheel transmission shaft (1 gear) transmits speed-up rotation. Also, when the auxiliary transmission gear (1 gear) is engaged with the gear (to), the high speed gear G!+1
The front wheel transmission shaft (Igl) is also meshed and rotated to transmit high speed transmission.
しかし、このときは、副変速ギヤ(1旧よ低速ギヤQ3
から外れているために、クラッチ(至)を入りにしても
、又ディスククラッチI2eを入りにしても、減速、増
速は行われない。However, at this time, the auxiliary transmission gear (1 old, low speed gear Q3
Since the disc is disengaged from the clutch, deceleration or speed increase will not occur even if the clutch (to) is engaged or the disc clutch I2e is engaged.
OQはトラクタの後側に連結した耕耘装置で、リフトア
ーム−の制御で昇降でき、動力取出軸(至)で耕耘伝動
する構成としている。The OQ is a tilling device connected to the rear side of the tractor, which can be raised and lowered under the control of a lift arm, and is configured to transmit tilling power through a power take-off shaft.
図はこの発明の一実施例を示すもので、第1図は一部の
縦断面図、第2図は側面図である。
図中、符号(1)は前車輪、(2)は後車輪、(3)は
変速伝動装置、(4)は副変速装置、(5)は増速伝動
装置を示す。The drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view of a portion thereof, and FIG. 2 being a side view. In the figure, reference numeral (1) indicates a front wheel, (2) a rear wheel, (3) a speed change transmission, (4) an auxiliary transmission, and (5) a speed increase transmission.
Claims (1)
変速伝動装置(3)において、副変速装置(4)の低速
位置で該前車輪(1)を増変速する増速伝動装置(5)
を設けてなるトラクタの変速装置。In a four-wheel drive variable speed transmission (3) that drives front wheels (1) and rear wheels (2), a speed increasing transmission that increases the speed of the front wheels (1) at a low speed position of an auxiliary transmission (4). Device (5)
A tractor transmission device equipped with a
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16717488A JPH0218118A (en) | 1988-07-04 | 1988-07-04 | Speed change gear for tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16717488A JPH0218118A (en) | 1988-07-04 | 1988-07-04 | Speed change gear for tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0218118A true JPH0218118A (en) | 1990-01-22 |
Family
ID=15844792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16717488A Pending JPH0218118A (en) | 1988-07-04 | 1988-07-04 | Speed change gear for tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0218118A (en) |
-
1988
- 1988-07-04 JP JP16717488A patent/JPH0218118A/en active Pending
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